Source code
Revision control
Copy as Markdown
Other Tools
/***************************************************************************************************
Zyan Core Library (Zycore-C)
Original Author : Florian Bernd
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
***************************************************************************************************/
/**
* @file
* Provides helper functions for performant number to string conversion.
*/
#ifndef ZYCORE_FORMAT_H
#define ZYCORE_FORMAT_H
#include "zydis/Zycore/Status.h"
#include "zydis/Zycore/String.h"
#include "zydis/Zycore/Types.h"
#ifdef __cplusplus
extern "C" {
#endif
/* ============================================================================================== */
/* Exported functions */
/* ============================================================================================== */
/* ---------------------------------------------------------------------------------------------- */
/* Helpers */
/* ---------------------------------------------------------------------------------------------- */
/**
* Get the absolute value of a 64 bit int.
*
* @param x The value to process.
* @return The absolute, unsigned value.
*
* This gracefully deals with the special case of `x` being `INT_MAX`.
*/
ZYAN_INLINE ZyanU64 ZyanAbsI64(ZyanI64 x)
{
// INT_MIN special case. Can't use the value directly because GCC thinks
// it's too big for an INT64 literal, however is perfectly happy to accept
// this expression. This is also hit INT64_MIN is defined in `stdint.h`.
if (x == (-0x7fffffffffffffff - 1))
{
return 0x8000000000000000u;
}
return (ZyanU64)(x < 0 ? -x : x);
}
/* ---------------------------------------------------------------------------------------------- */
/* Insertion */
/* ---------------------------------------------------------------------------------------------- */
/**
* Inserts formatted text in the destination string at the given `index`.
*
* @param string The destination string.
* @param index The insert index.
* @param format The format string.
* @param ... The format arguments.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYAN_PRINTF_ATTR(3, 4)
ZYCORE_EXPORT ZyanStatus ZyanStringInsertFormat(ZyanString* string, ZyanUSize index,
const char* format, ...);
/* ---------------------------------------------------------------------------------------------- */
/**
* Formats the given unsigned ordinal `value` to its decimal text-representation and
* inserts it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param index The insert index.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringInsertDecU(ZyanString* string, ZyanUSize index, ZyanU64 value,
ZyanU8 padding_length);
/**
* Formats the given signed ordinal `value` to its decimal text-representation and
* inserts it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param index The insert index.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param force_sign Set `ZYAN_TRUE`, to force printing of the `+` sign for positive numbers.
* @param prefix The string to use as prefix or `ZYAN_NULL`, if not needed.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringInsertDecS(ZyanString* string, ZyanUSize index, ZyanI64 value,
ZyanU8 padding_length, ZyanBool force_sign, const ZyanString* prefix);
/**
* Formats the given unsigned ordinal `value` to its hexadecimal text-representation and
* inserts it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param index The insert index.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param uppercase Set `ZYAN_TRUE` to use uppercase letters ('A'-'F') instead of lowercase
* ones ('a'-'f').
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringInsertHexU(ZyanString* string, ZyanUSize index, ZyanU64 value,
ZyanU8 padding_length, ZyanBool uppercase);
/**
* Formats the given signed ordinal `value` to its hexadecimal text-representation and
* inserts it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param index The insert index.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param uppercase Set `ZYAN_TRUE` to use uppercase letters ('A'-'F') instead of lowercase
* ones ('a'-'f').
* @param force_sign Set `ZYAN_TRUE`, to force printing of the `+` sign for positive numbers.
* @param prefix The string to use as prefix or `ZYAN_NULL`, if not needed.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringInsertHexS(ZyanString* string, ZyanUSize index, ZyanI64 value,
ZyanU8 padding_length, ZyanBool uppercase, ZyanBool force_sign, const ZyanString* prefix);
/* ---------------------------------------------------------------------------------------------- */
/* Appending */
/* ---------------------------------------------------------------------------------------------- */
#ifndef ZYAN_NO_LIBC
/**
* Appends formatted text to the destination string.
*
* @param string The destination string.
* @param format The format string.
* @param ... The format arguments.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYAN_PRINTF_ATTR(2, 3)
ZYCORE_EXPORT ZYAN_REQUIRES_LIBC ZyanStatus ZyanStringAppendFormat(
ZyanString* string, const char* format, ...);
#endif // ZYAN_NO_LIBC
/* ---------------------------------------------------------------------------------------------- */
/**
* Formats the given unsigned ordinal `value` to its decimal text-representation and
* appends it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringAppendDecU(ZyanString* string, ZyanU64 value,
ZyanU8 padding_length);
/**
* Formats the given signed ordinal `value` to its decimal text-representation and
* appends it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param force_sign Set `ZYAN_TRUE`, to force printing of the `+` sign for positive numbers.
* @param prefix The string to use as prefix or `ZYAN_NULL`, if not needed.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringAppendDecS(ZyanString* string, ZyanI64 value,
ZyanU8 padding_length, ZyanBool force_sign, const ZyanStringView* prefix);
/**
* Formats the given unsigned ordinal `value` to its hexadecimal text-representation and
* appends it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param uppercase Set `ZYAN_TRUE` to use uppercase letters ('A'-'F') instead of lowercase
* ones ('a'-'f').
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringAppendHexU(ZyanString* string, ZyanU64 value,
ZyanU8 padding_length, ZyanBool uppercase);
/**
* Formats the given signed ordinal `value` to its hexadecimal text-representation and
* appends it to the `string`.
*
* @param string A pointer to the `ZyanString` instance.
* @param value The value.
* @param padding_length Padds the converted value with leading zeros, if the number of chars is
* less than the `padding_length`.
* @param uppercase Set `ZYAN_TRUE` to use uppercase letters ('A'-'F') instead of lowercase
* ones ('a'-'f').
* @param force_sign Set `ZYAN_TRUE`, to force printing of the `+` sign for positive numbers.
* @param prefix The string to use as prefix or `ZYAN_NULL`, if not needed.
*
* @return A zyan status code.
*
* This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified
* `ZyanString` instance.
*/
ZYCORE_EXPORT ZyanStatus ZyanStringAppendHexS(ZyanString* string, ZyanI64 value,
ZyanU8 padding_length, ZyanBool uppercase, ZyanBool force_sign, const ZyanStringView* prefix);
/* ---------------------------------------------------------------------------------------------- */
/* ============================================================================================== */
#ifdef __cplusplus
}
#endif
#endif // ZYCORE_FORMAT_H